综放工作面自燃倾向原因分析与处理

Cause Analysis and Processing of Spontaneous Combustion Tendency in Mechanized Caving Face

N2906综放工作面瓦斯涌出量大、自然发火期短,煤层间距小,采空区漏风量较大,在这些不利因素影响下工作面采空区发生了自燃倾向,根据自然发火产生、发展规律,及时采取加强化验分析、减风控抽、采空区多点注氮、深部浅部交替充填、斜交钻孔、巷道松动圈注水等措施,有效地控制了综放工作面自燃的发生。

The gas emission quantity of N2906 mechanized caving face was big,the spontaneous combustion period was short,the coal seam spacing was small,and the air leakage volume of goaf was larger,under these conditions,spontaneous combustion tendency took place in the goaf of working face. Based on the production and development laws of spontaneous combustion,it timely took some measures to control the occurrence of spontaneous combustion of mechanized caving face effectively,these measures included strengthening the laboratory analysis,reducing wind and controlling pump,multi- point nitrogen injection in goaf,deep and shallow alternate filling,oblique drilling,and water injection in roadway loose circle.